Updates playback state and send notification to the listening clients.
See MediaControllerServerInfo.addPlaybackInfoChangeListener to check
how to receive playback info changes from server on client side.

RequestReply [nullable]:
RequestReply object which will be returned to the author of the request.

2.35. MediaControllerEnabledChangeRequestCallback

The MediaControllerEnabledChangeRequestCallback interface that defines the listener
for change requests for spherical mode in MediaControllerMode360.addChangeRequestListener() and
subtitles mode in MediaControllerSubtitles.addChangeRequestListener().